Boundary Lubricants with Exceptionally Low Friction Coefficients Based on 2D Close-Packed Phosphatidylcholine Liposomes

被引：156

作者：

Goldberg, Ronit ^{[1
]}

Schroeder, Avi ^{[2
,3
]}

Silbert, Gilad ^{[1
]}

Turjeman, Keren ^{[4
]}

Barenholz, Yechezkel ^{[4
]}

Klein, Jacob ^{[1
]}

机构：

[1] Weizmann Inst Sci, Dept Mat & Interfaces, IL-76100 Rehovot, Israel

[2] MIT, Dept Chem Engn, Cambridge, MA 02139 USA

[3] MIT, Koch Inst Integrat Canc Res, Cambridge, MA 02139 USA

[4] Hadassah Med Sch, Dept Biochem, IL-91120 Jerusalem, Israel

来源：

ADVANCED MATERIALS | 2011年 / 23卷 / 31期

关键词：

PRESSURES; HYDRATION; SURFACES; BILAYER; FORCES; FLUID; ACT;

D O I：

10.1002/adma.201101053

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Liposomes of hydrogenated soy phosphatidylcholine (PC) lipids spontaneously self-assemble in close-packed layers on solid surfaces to form boundary lubricants that reduce the coefficient p of sliding friction between them down to mu approximate to 10(-4) - 2 x 10(-5), at pressures up to ca. 12 MPa. This strikingly low value is attributed to hydration-lubrication by the PC headgroups exposed at the surfaces of the gel-phase vesicles.

引用

页码：3517 / +

页数：6

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